Belgium and Greece had to share the points after playing out a hard fought 1-1 draw at the King Baudouin Stadium, which saw 2 Greek players get sent off.
The Citizen scored late in the game much to the heartbreak of the Crystal Palace supporters.
Twitter reacted as Manchester City were held to a draw at the Etihad, with Boro scoring a dramatic Equaliser
Manchester City's 3-1 win over the Catalan giants will go down as one of the most historic nights for the club and could be a victory that spurs the Citizens on in Europe.
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Barcelona were dished out a doze of their own medicine as Pep Guardiola managed to beat the 'demons' he created for the first time as Manchester City boss.
Barcelona travel to the Etihad stadium for their fourth Champions League group-stage match, where a win would more or less secure the top spot in the group for the Blaugranas.
Pep Guardiola will be keen to put an end to his barren run of games off late as Manchester City visit West Brom on Saturday.
There was a big difference in opinion between the Portuguese manager and the Belgian playmaker, which led to his departure from Chelsea.
Manchester City are not afraid of Barcelona, according to City star Kevin De Bruyne.